Zeus is the all-knowing and all-powerful god who rules over the heavenly world, where the gods live. However, in reality, Zeus is an erotic old man who dreams of having an affair with a young angel without his wife Hera finding out. Zeus had set his sights on the promotion exam for angels, which is held every three years. Three angels, Yuu, Miki, and Chadoko, come to earth to take the promotion exam. The girls begin working part-time at a flower shop, but one harsh trial after another awaits them. Zeus watches over them from the shade. However, it is not parental love, but an erotic desire to do something naughty whenever the opportunity arises. However, this action of Zeus becomes known even to the underworld...